of Rolling Stone described Phoenix's appearance as "either Phoenix completely locked into his hoax character (the Bearded Rapper) or the most paranoid, drugged-out interview ever"; Kreps favored the hoax theory, noting that Phoenix repeatedly broke out of character, appeared to end the interview acknowledging Letterman for playing along, and noting that Casey Affleck, director of a documentary about "Phoenix's hip-hop dream, was reportedly at the CBS studios yesterday, no doubt filming this landmark interview." Letterman humorously closed the interview with the line, "Joaquin, I'm sorry you couldn't be here tonight." Entertainment Weekly pointed out that the interview was similar to one he did in October 2000 when he was there to promote his film The Yards. Back in 2000, executive producer Maria Pope commented on Phoenix's behavior: "The first couple of times we thought there was a gas leak in the greenroom. Now we've determined, no, that's just Joaquin." On the February 19, 2009 episode of The Late Show, Letterman told guest Barbara Walters that he believed Phoenix's performance was "a goof" but he "sure can take a punch". The incident was also compared to Crispin Glover's 1987 appearance on Letterman's NBC show. Someone claiming to have attended the taping posted on IMDb's message board, saying the appearance was performance art and Joaquin was not in his rapper persona during off-air breaks. According to the post, during breaks Letterman and his staff worked to quickly come up with new material before going on-air. After taping the interview, Joaquin thanked the audience and waved. Affleck's mockumentary on Phoenix, I'm Still Here, was released in 2010. Phoenix returned to Late Show in September 2010, and apologized to Letterman for his behaviour during his previous appearance. March 2–6 Irish rock group U2 appeared as the musical guest on all five episodes for the week. This was the first time in the show's history that a single act has ever appeared on five consecutive nights. The band's appearance on the show, billed as "U2 Week," was in support of their latest album, No Line on the Horizon, which was released on Tuesday, March 3. The band started the week by performing "Breathe," which was followed by "Magnificent" on the second night, "I'll Go Crazy If I Don't Go Crazy Tonight" on the third night, "Beautiful Day" on the fourth night, and "Get On Your Boots" for the final night. The band also contributed Top